JP2000220138A - Device to be attached to pipe end and pipe pile using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide devices to be attached to pipe ends and a pipe pile using these devices which can be easily assembled at a low production cost and also can be attached to used pipes. SOLUTION: These are devices 12, 13 to be fixed to the ends of a pipe 11 and a pipe pile 10 using these devices. They are closely fitted to the ends of the pipe 11; in the vicinities, fitting portions 15, 26 are provided with ring-shaped grooves 18, 29; stopper portions 16, 27 larger than the inner diameter of pipe 11 are coupled in one united body with the fitting portions 15, 26 and are connected to the pipe; and with the fitting portions 15, 26 installed to the pipe 11, a caulking member 14 projecting out from ring-shaped grooves 18, 29 and equipped with linking projections 21 to 23 biting to the inner end of the pipe 11 is provided.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、例えば、パイプの
端部に取付ける管端取付け具、及びこれを用いた建築工
事や土木工事等で使用される管杭に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a pipe end fitting to be attached to an end of a pipe, and a pipe pile using the pipe end fitting for use in a construction work or a civil engineering work.

【０００２】[0002]

【従来の技術】土木工事現場や建築工事現場において立
入り禁止の柵を設ける場合には、多数の杭を連続的に地
面に打ち込み、これらをチェーンや別のパイプ等で連結
することが行われている。従来、この杭に使用する材料
としては、使用済のパイプを適当長さに切断したものが
使用されている。ところが、端部を切断した状態のパイ
プをそのまま杭として使用すると、最初に地中に打ち込
む場合は特に支障なく打ち込むことができるが、２回目
からはパイプの中に土砂が嵌入し、地中に打ち込むこと
は極めて困難であるという問題があった。そこで、図７
に示すように杭の両端に尖り部８０とヘッダー部８１を
備えた金属製杭８２が提案されている。この金属製杭８
２は金属製パイプ８３の両端を徐々に縮径し、その先部
に先端が尖った尖り部８０と、頂部が平たくなったヘッ
ダー部８１を溶接固定したものである。なお、図７にお
いて８６、８７は溶接部を示す。2. Description of the Related Art In the case where a fence is set off at civil engineering sites or construction sites, many piles are continuously driven into the ground, and these are connected with a chain or another pipe. I have. Conventionally, as a material used for this pile, a used pipe cut into an appropriate length has been used. However, if the pipe with the cut end is used as it is as a stake, it can be driven without hindrance when it is first driven into the ground, but from the second time earth and sand will fit in the pipe, There was a problem that it was extremely difficult to drive. Therefore, FIG.
As shown in FIG. 1, a metal pile 82 having a pointed portion 80 and a header portion 81 at both ends of the pile has been proposed. This metal pile 8
Reference numeral 2 denotes a metal pipe 83 in which both ends are gradually reduced in diameter, and a sharpened portion 80 having a sharp tip and a header portion 81 having a flat top are welded and fixed at the tip thereof. In FIG. 7, reference numerals 86 and 87 indicate welded portions.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、従来例
に係る金属製杭８２の製作にあっては、金属製パイプ８
３の両端近傍部８４、８５を徐々に絞る加工と、更に尖
り部８０及びヘッダー部８１を溶接する必要があったの
で、製造に極めて手間がかかり高価になるという問題が
あった。そこで、本出願人は先に特願平９−２８６１１
３号に示すように、パイプの端部に嵌入する嵌入部に環
状溝を形成して、嵌入部をパイプに装着した後には、周
囲のパイプをハンマー等で叩いて環状溝に向けて凹ま
せ、装着するヘッダー金物や尖り部を有する金物をパイ
プから取れないようにした管杭を提案した。ところが、
この管杭においては嵌入部の環状溝の位置が正確に分か
らないので、金物のセットに支障があり、パイプの表面
に窪み疵が付くので、外観が悪いという問題があった。
本発明はかかる事情に鑑みてなされたもので、製造が安
価で組立容易、更には従来の使用済のパイプも使用でき
る管端取付け具及びこれを用いた管杭を提供することを
目的とする。However, in manufacturing the metal pile 82 according to the conventional example, the metal pipe 8
Since it was necessary to gradually narrow down the portions 84 and 85 near both ends of 3 and weld the sharp portion 80 and the header portion 81, there was a problem that the production was extremely troublesome and expensive. Therefore, the applicant of the present application has previously filed Japanese Patent Application No. 9-28611.
As shown in No. 3, an annular groove is formed in a fitting portion that fits into the end of the pipe, and after the fitting portion is attached to the pipe, the surrounding pipe is hit with a hammer or the like to be depressed toward the annular groove. In addition, a pipe pile was proposed in which a header metal fitting or a metal fitting having a sharp portion was not removed from a pipe. However,
In this pipe pile, since the position of the annular groove at the fitting portion is not accurately known, there is a problem in that the setting of hardware is hindered, and the appearance of the pipe is poor because the surface of the pipe has dent flaws.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pipe end fitting which is inexpensive to manufacture, easy to assemble, and can also use a conventional used pipe, and a pipe pile using the same. .

【０００４】[0004]

【課題を解決するための手段】前記目的に沿う第１の発
明に係る管端取付け具は、パイプの端部に固定する管端
取付け具であって、前記パイプの端部に密接嵌入し、周
囲には１又は２以上の掛止突起が形成されている嵌入部
と、該嵌入部に一体的に連接し、前記パイプの内径より
大きいストッパー部とを有し、前記パイプに前記嵌入部
を装着した状態では、前記掛止突起が前記パイプの内側
に噛み込むように構成されている。ここで、第１の発明
に係る管端取付け具において、前記掛止突起が嵌入方向
に徐々にその高さが低くなった抜け止め掛止突起によっ
て形成されているのが好ましい。また、第２の発明に係
る管端取付け具は、パイプの端部に固定する管端取付け
具であって、前記パイプの端部に密接嵌入し、周囲には
環状溝が形成されている嵌入部と、該嵌入部に一体的に
連接し、前記パイプの内径より大きいストッパー部と、
前記環状溝に装着され、前記パイプに前記嵌入部を装着
した状態では、前記環状溝から突出し、前記パイプの内
端部に噛み込む掛止突起を備えたかしめ部材とを有して
いる。なお、ここで、第２の本発明の具体例としては以
下のようなものがある。 （１）前記かしめ部材は、前記環状溝内を１８０度を超
えて２２５度の範囲で覆う円弧状部を有し、前記掛止突
起は、該円弧状部の端部及び中間部に設けられている管
端取付け具。 （２）前記掛止突起は、装着方向にその半径方向の幅が
徐々に縮小したテーパー部を備えている管端取付け具。 次に、前記目的に沿う第３の発明に係る管杭は、所定長
さのパイプと、該パイプの下端に装着された第１の管端
取付け具と、該パイプの上端に装着された第２の管端取
付け具を有する管杭であって、前記第１の管端取付け具
は、前記パイプの端部に密接嵌入し、周囲には１又は２
以上の第１の抜け止め掛止突起が設けられている第１の
嵌入部と、該第１の嵌入部に一体的に連接し、前記パイ
プの内径より大きい第１のストッパー部とを有し、前記
第２の管端取付け具は、前記パイプの端部に密接嵌入
し、周囲には１又は２以上の第２の抜け止め掛止突起が
形成されている第２の嵌入部と、該第２の嵌入部に一体
的に連接し、前記パイプの内径より大きい第２のストッ
パー部とを有している。According to a first aspect of the present invention, there is provided a pipe end fitting fixed to an end of a pipe, the fitting being closely fitted to an end of the pipe. At the periphery, one or two or more engaging projections are formed, and a stopper part which is integrally connected to the fitting part and is larger than the inside diameter of the pipe is provided. In the mounted state, the engaging projection is configured to bite into the inside of the pipe. Here, in the tube end fitting according to the first invention, it is preferable that the retaining projection is formed by a retaining retaining projection whose height gradually decreases in the fitting direction. A pipe end fitting according to a second aspect of the present invention is a pipe end fitting fixed to an end of a pipe, wherein the fitting is closely fitted to an end of the pipe, and an annular groove is formed around the end. A stopper portion integrally connected to the fitting portion and larger than the inner diameter of the pipe;
In a state where the fitting portion is mounted on the pipe, the caulking member is provided with a locking projection that protrudes from the annular groove and bites into an inner end of the pipe. Here, specific examples of the second present invention include the following. (1) The caulking member has an arc-shaped portion that covers the inside of the annular groove in a range of more than 180 degrees and 225 degrees, and the latching projections are provided at an end portion and an intermediate portion of the arc-shaped portion. Pipe end fittings. (2) The pipe end fitting, wherein the hooking projection has a tapered portion whose width in the radial direction is gradually reduced in the mounting direction. Next, a pipe pile according to a third aspect of the present invention, which meets the above object, includes a pipe having a predetermined length, a first pipe end fitting attached to a lower end of the pipe, and a first pipe end attached to an upper end of the pipe. A pipe pile having two pipe end fittings, wherein the first pipe end fitting fits closely into the end of the pipe and has one or two surroundings.
It has a first fitting portion provided with the above-mentioned first retaining stopper projection, and a first stopper portion integrally connected to the first fitting portion and larger than the inner diameter of the pipe. A second fitting portion, which is closely fitted to an end of the pipe, and has one or more second retaining protrusions formed around the second fitting portion; A second stopper portion integrally connected to the second fitting portion and larger than the inner diameter of the pipe;

【０００５】そして、第４の発明に係る管杭は、所定長
さのパイプと、該パイプの下端に装着された第１の管端
取付け具と、該パイプの上端に装着された第２の管端取
付け具を有する管杭であって、前記第１の管端取付け具
は、前記パイプの端部に密接嵌入し、周囲には第１の環
状溝が形成されている第１の嵌入部と、該第１の嵌入部
に一体的に連接し、前記パイプの内径より大きい第１の
ストッパー部と、該第１のストッパー部に連結され先方
に縮径する尖り部と、前記第１の環状溝に装着され、前
記パイプに前記第１の嵌入部を装着した状態では、前記
第１の環状溝から突出し、前記パイプの内端部に噛み込
む掛止突起を備えた第１のかしめ部材とを有し、前記第
２の管端取付け具は、前記パイプの端部に密接嵌入し、
周囲には第２の環状溝が形成されている第２の嵌入部
と、該第２の嵌入部に一体的に連接し、前記パイプの内
径より大きい第２のストッパー部と、該第２のストッパ
ー部に連結されるヘッダー部と、前記第２の環状溝に装
着され、前記パイプに前記第２の嵌入部を装着した状態
では、前記第２の環状溝から突出し、前記パイプの内端
部に噛み込む掛止突起を備えた第２のかしめ部材とを有
している。この第４の発明においては、前記第１、第２
の環状溝に装着される第１、第２のかしめ部材は、前記
それぞれの環状溝内を１８０度を超えて２２５度の範囲
で覆う円弧状部を有し、前記掛止突起は、該円弧状部の
端部及び中間部に設けられ、しかも、前記掛止突起は、
装着方向にその半径方向幅が徐々に縮小したテーパー部
を備えているのが好ましい。なお、かしめ部材の円弧状
部が環状溝を１８０度以下で覆う場合は、一旦装着した
かしめ部材が外れやすく、２５５度を超えるとかしめ部
材の装着が困難となる。A pipe pile according to a fourth aspect of the present invention is a pipe pile having a predetermined length, a first pipe end fitting attached to a lower end of the pipe, and a second pipe end attached to an upper end of the pipe. A pipe pile having a pipe end fitting, wherein the first pipe end fitting is closely fitted to an end of the pipe and has a first annular groove formed around the first fitting portion. A first stopper portion which is integrally connected to the first fitting portion and is larger than the inner diameter of the pipe; a sharp portion which is connected to the first stopper portion and has a reduced diameter toward the front; A first caulking member provided with an engaging projection that is mounted in an annular groove and protrudes from the first annular groove and engages with an inner end of the pipe when the first fitting portion is mounted on the pipe; Wherein the second pipe end fitting is closely fitted to the end of the pipe,
A second fitting portion having a second annular groove formed therearound; a second stopper portion which is integrally connected to the second fitting portion and is larger than the inner diameter of the pipe; A header portion connected to a stopper portion, mounted in the second annular groove, and in a state in which the second fitting portion is mounted on the pipe, protrudes from the second annular groove, and an inner end portion of the pipe And a second caulking member provided with a hooking projection that engages with the second caulking member. According to the fourth aspect, the first and the second
The first and second caulking members attached to the annular groove have an arc-shaped portion that covers the inside of each annular groove in a range of more than 180 degrees and 225 degrees, and the hooking projection is It is provided at the end and the intermediate part of the arc-shaped part, and the hooking projection is
It is preferable to provide a tapered portion whose radial width is gradually reduced in the mounting direction. In the case where the arc-shaped portion of the caulking member covers the annular groove at 180 degrees or less, the caulking member once mounted tends to come off easily, and if it exceeds 255 degrees, it becomes difficult to mount the caulking member.

【０００６】[0006]

【発明の実施の形態】続いて、添付した図面を参照しつ
つ、本発明を具体化した実施の形態につき説明し、本発
明の理解に供する。ここに、図１は本発明の一実施の形
態に係る管端取付け具を適用した管杭の断面図、図２は
同管杭の杭先取付け具の説明図、図３はこれに使用する
かしめ部材の平面図、図４は同かしめ部材を装着した管
杭の断面図、図５は前記管杭の頭部に取付けられた杭頭
取付け具の説明図、図６は本発明の他の実施の形態に係
る管端取付け具を適用した管杭の断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a sectional view of a pipe pile to which a pipe end fitting according to an embodiment of the present invention is applied, FIG. 2 is an explanatory view of a pile tip fitting of the pipe pile, and FIG. 3 is used for this. FIG. 4 is a plan view of a caulking member, FIG. 4 is a cross-sectional view of a pipe pile having the caulking member attached thereto, FIG. 5 is an explanatory view of a pile head mounting tool attached to the head of the pipe pile, and FIG. It is sectional drawing of the pipe pile to which the pipe end fixture which concerns on embodiment is applied.

【０００７】図１〜図５に示すように、本発明の一実施
の形態に係る管杭１０は、所定（例えば、１ｍ〜２ｍ）
の長さを有するパイプ１１と、パイプ１１の下端に取付
けられる鋳鋼又は鋳鉄製の杭先取付け具（第１の管端取
付け具の一例）１２と、パイプ１１の上端に取付けられ
る鋳鋼又は鋳鉄製の杭頭取付け具（第２の管端取付け具
の一例）１３と、杭先取付け具１２及び杭頭取付け具１
３にそれぞれ装着されるかしめ部材１４（第１、第２の
かしめ部材の一例）とを有している。以下、これらにつ
いて詳しく説明する。As shown in FIGS. 1 to 5, a pipe pile 10 according to an embodiment of the present invention has a predetermined size (for example, 1 m to 2 m).
, A cast-iron or cast-iron tip-mounting fixture (an example of a first pipe-end fixture) 12 attached to the lower end of the pipe 11, and a cast-steel or cast-iron attached to the upper end of the pipe 11. Pile mounting fixture (an example of a second pipe end mounting) 13, a pile tip mounting fixture 12 and a pile head mounting fixture 1
3 and a caulking member 14 (an example of the first and second caulking members). Hereinafter, these will be described in detail.

【０００８】前記パイプ１１は新品のパイプであっても
よいが、通常は建築現場等で足場材として使用された使
用済のパイプを使用するのが好ましく、その外径はこの
実施の形態では４８．６ｍｍのガス管又は一般構造用鋼
管である。図１、図２に示すように、このパイプ１１の
下部に装着する杭先取付け具１２は、パイプ１１の下端
に密着嵌入する第１の嵌入部１５と、第１の嵌入部１５
に一体的に連接し、パイプ１１の内径より大きい第１の
ストッパー部１６と、第１のストッパー部１６に一体的
に連結され先方に縮径する尖り部１７とを有している。
前記第１の嵌入部１５はパイプ１１の内径と同一かある
いは１ｍｍ以内の範囲でその外径が小径となって、その
長さは２５ｍｍ程度となっている。Although the pipe 11 may be a new pipe, it is usually preferable to use a used pipe used as a scaffolding material at a construction site or the like, and its outer diameter is 48 in this embodiment. .6 mm gas pipe or general structural steel pipe. As shown in FIG. 1 and FIG. 2, a stake attachment device 12 attached to a lower portion of the pipe 11 includes a first fitting portion 15 that fits tightly into a lower end of the pipe 11, and a first fitting portion 15.
A first stopper portion 16 which is larger than the inner diameter of the pipe 11 and a sharpened portion 17 which is integrally connected to the first stopper portion 16 and whose diameter is reduced toward the front.
The outer diameter of the first fitting portion 15 is smaller than the inner diameter of the pipe 11 or within 1 mm, and its length is about 25 mm.

【０００９】第１の嵌入部１５の周囲には第１の環状溝
１８が形成されている。この第１の環状溝１８の幅は約
１０ｍｍとなって、その断面は深さが約４〜５ｍｍのＵ
状溝となっている。前記第１のストッパー部１６は尖り
部１７の基端側に形成されて、その最大外径は４８．６
ｍｍとなって、パイプ１１に円滑に連結するようになっ
ている。尖り部１７は頂角が約３０度の円錐状となっ
て、地中に嵌入し易くなっていると共に、全体の重量を
軽減するため、この杭先取付け具１２の内部には図示し
ない中空部１９（図１参照）が形成されている。前記第
１の環状溝１８に装着されるかしめ部材１４は、図２、
図３に示すように、板バネ材からなって、その円弧角α
が１８０度を超え２２５度以内の円弧状部２０とその両
側に設けられている掛止突起２１、２２と中央に設けら
れている掛止突起２３とを備えている。かしめ部材１４
の円弧状部２０の半径は、環状溝１８の溝底の半径と略
同一程度となっている。[0009] A first annular groove 18 is formed around the first fitting portion 15. The width of the first annular groove 18 is about 10 mm, and the cross section thereof has a depth of about 4-5 mm.
It is shaped like a groove. The first stopper portion 16 is formed on the base end side of the pointed portion 17 and has a maximum outer diameter of 48.6.
mm so as to be smoothly connected to the pipe 11. The pointed portion 17 has a conical shape with an apex angle of about 30 degrees so that it can be easily inserted into the ground. In addition, in order to reduce the overall weight, a hollow portion not shown 19 (see FIG. 1). The caulking member 14 mounted on the first annular groove 18 is shown in FIG.
As shown in FIG. 3, the circular angle α is made of a leaf spring material.
Is provided with an arc-shaped portion 20 having an angle of more than 180 degrees and within 225 degrees, hooking projections 21 and 22 provided on both sides thereof, and hooking projections 23 provided at the center. Caulking member 14
Is approximately the same as the radius of the groove bottom of the annular groove 18.

【００１０】前記掛止突起２１、２２は、十分強度を有
する円弧状になった板バネ材の端部を外側に折り曲げて
形成されているが、その端部には、杭先取付け具１２の
挿入方向にその突出長さ（半径方向の幅）が徐々に短く
なるテーパー部２４、２５を備えている。このテーパー
部２４、２５の勾配は、この実施の形態では約２〜１０
度程度となっている。一方、掛止突起２３は、板バネ材
を半円状に曲げて形成されて、上下方向にはストレート
となっているが、掛止突起２１、２２と同様に挿入方向
にその突出幅を短くすることもできる。図４に示すよう
に、この掛止突起２１〜２３の外端を通る円の直径は、
パイプ１１の内径より１〜４ｍｍ程度大きくなって、図
１に示すように、一旦挿入した掛止突起２１〜２３がパ
イプ１１の内側部分に噛み込むようになっている。The hooking projections 21 and 22 are formed by bending the ends of an arc-shaped leaf spring material having a sufficient strength outwardly. Tapered portions 24 and 25 whose protrusion length (radial width) gradually decreases in the insertion direction are provided. The slope of the tapered portions 24 and 25 is about 2 to 10 in this embodiment.
Degree. On the other hand, the hooking projection 23 is formed by bending a leaf spring material into a semicircle and is straight in the vertical direction. However, like the hooking projections 21 and 22, the projection width is shortened in the insertion direction. You can also. As shown in FIG. 4, the diameter of a circle passing through the outer ends of the latching projections 21 to 23 is
As shown in FIG. 1, the hook projections 21 to 23 which have been inserted once bite into the inner portion of the pipe 11.

【００１１】一方、杭頭取付け具１３は、図５に示すよ
うに、パイプ１１の上端に密着嵌入する第２の嵌入部２
６と、第２の嵌入部２６に一体的に連接し、パイプ１１
の外径と同一径の第２のストッパー部２７と、第２のス
トッパー部２７に連結されて衝撃荷重を受けるヘッダー
部２８とを有している。前記第２の嵌入部２６の周囲に
は、第２の環状溝２９が設けられている。この第２の環
状溝２９の断面形状は、前記第１の環状溝１８の断面形
状と同一となって、前記したかしめ部材１４が装着でき
るようになっている。このかしめ部材１４の装着にあっ
ては、杭頭取付け具１３の挿入方向に、各掛止突起２
１、２２（場合によっては、２３）の突出長さが短くな
る方向に装着する。これによって、掛止突起２１〜２３
がパイプ１１の内側に噛み込み、装着した杭頭取付け具
１３が抜けなくなる。なお、全体の重量を減らすため
に、第２の嵌入部２６の内側に中空部３０（図１参照）
が形成されているのが好ましい。On the other hand, as shown in FIG. 5, the pile head fixture 13 has a second fitting portion 2 which is fitted into the upper end of the pipe 11 in close contact therewith.
6 and the second fitting portion 26 are integrally connected to each other,
And a header 28 connected to the second stopper 27 and receiving an impact load. A second annular groove 29 is provided around the second fitting portion 26. The cross-sectional shape of the second annular groove 29 is the same as the cross-sectional shape of the first annular groove 18, so that the caulking member 14 can be mounted. In mounting the caulking member 14, each of the latching projections 2 is inserted in the insertion direction of the pile head fixture 13.
Attach in the direction in which the protruding length of 1, 22 (or 23 in some cases) becomes shorter. Thereby, the locking projections 21 to 23
Bites into the inside of the pipe 11 so that the attached pile head fixture 13 does not come off. In order to reduce the overall weight, a hollow portion 30 (see FIG. 1) is provided inside the second fitting portion 26.
Is preferably formed.

【００１２】以上のように、本発明の一実施の形態に係
る管杭１０においては、それぞれかしめ部材１４が第
１、第２の環状溝１８、２９に装着された杭先取付け具
１２と、杭頭取付け具１３を予め用意しておき、適当長
さに切断したパイプ１１の両端に杭先取付け具１２及び
杭頭取付け具１３を、ハンマー等によって叩き込むこと
によって、かしめ部材１４の掛止突起２１〜２３をパイ
プ１１の内側に噛み込ませている。そして、杭先取付け
具１２及び杭頭取付け具１３をパイプ１１内に装着した
後は、かしめ部材１４の掛止突起２１、２２が進入方向
にその突出長さが短くなるテーパー状に形成されている
ので、パイプ１１内に確実に掛止して抜けなくなり、こ
の管杭１０を繰り返し使用できる。As described above, in the pipe pile 10 according to an embodiment of the present invention, the caulking member 14 is attached to the first and second annular grooves 18 and 29, respectively, A pile head attachment 13 is prepared in advance, and the tip of the pipe tip 11 and the pile head attachment 13 are beaten into both ends of the pipe 11 cut to an appropriate length by a hammer or the like, so that the hooking projections of the caulking member 14 are formed. 21 to 23 are engaged with the inside of the pipe 11. Then, after the pile tip mounting tool 12 and the pile head mounting tool 13 are mounted in the pipe 11, the hooking projections 21 and 22 of the caulking member 14 are formed in a tapered shape in which the protruding length becomes shorter in the approach direction. As a result, the pipe pile 10 is securely hooked in the pipe 11 and does not come off, and the pipe pile 10 can be used repeatedly.

【００１３】続いて、図６に示す本発明の他の実施の形
態に係る管杭５０を示すが、図に示すように、所定長さ
のパイプ１１と、パイプ１１の下端及び上端に装着され
た杭先取付け具（第１の管端取付け具の一例）５１及び
杭頭取付け具（第２の管端取付け具の一例）５２とを有
している。杭先取付け具５１及び杭頭取付け具５２の材
質は、前記杭先取付け具１２及び杭頭取付け具１３と同
様である。杭先取付け具５１は、パイプ１１の下端部に
密接嵌入する第１の嵌入部５４と、第１の嵌入部５４の
下方に一体的に連接し、パイプの内径より大きい第１の
ストッパー部５５と、第１のストッパー部５５と一体的
に連結形成され、先方に縮径する尖り部５６とを有して
いる。この第１の嵌入部５４の周囲には、１又は複数の
第１の抜け止め掛止突起（掛止突起の一例）５７が形成
されている。この第１の抜け止め掛止突起５７は嵌入方
向にその高さが低くなって、第１の嵌入部の５４をパイ
プ１１に、例えば、叩き込む等して容易に装着できるが
一旦装着した後は、取り外しができないようになってい
る。この第１の抜け止め掛止突起５７の高さはパイプ１
１の内径やパイプ１１の種類によっても変わり、パイプ
１１の外径が４８．６ｍｍの場合には、通常は最大高さ
部分で１〜３ｍｍ程度で、勾配が１／５〜１程度となっ
ている。第１の抜け止め掛止突起５７の個数は、第１の
嵌入部に対して１つでも良いが、対称に複数個設けるの
が好ましい。なお、５８は中空部を示す。Next, a pipe pile 50 according to another embodiment of the present invention shown in FIG. 6 is shown. As shown in the figure, a pipe 11 having a predetermined length and attached to the lower and upper ends of the pipe 11 are shown. And a pile head attachment (an example of a second pipe end attachment) 52. The material of the tip mount 51 and the pile mount 52 is the same as that of the tip mount 12 and the pile mount 13. The tip mount 51 is integrally connected to a first fitting portion 54 that closely fits into the lower end portion of the pipe 11 and below the first fitting portion 54, and a first stopper portion 55 that is larger than the inner diameter of the pipe. And a sharpened portion 56 integrally formed with the first stopper portion 55 and reduced in diameter in the forward direction. Around the first fitting portion 54, one or a plurality of first retaining retaining projections 57 are formed. The height of the first stopper retaining projection 57 is reduced in the fitting direction, and the first fitting portion 54 can be easily attached to the pipe 11 by, for example, beating, but once attached, , Cannot be removed. The height of the first retaining retaining projection 57 is the pipe 1
1 and the type of the pipe 11, and when the outer diameter of the pipe 11 is 48.6 mm, the maximum height is usually about 1 to 3 mm and the gradient is about 1/5 to 1. I have. The number of the first retaining retaining projections 57 may be one for the first fitting portion, but it is preferable that a plurality of the first retaining retaining projections 57 be provided symmetrically. In addition, 58 shows a hollow part.

【００１４】一方、杭頭取付け具５２は、パイプ１１の
上端部に密接嵌入する第２の嵌入部５９と、第２の嵌入
部５９の上部に一体的に連接し、パイプ１１の内径より
大きい第２のストッパー部６０とを有し、その上にヘッ
ダー部６１が形成されている。第２の嵌入部５９の周囲
には、１又は複数の第２の抜け止め掛止突起（掛止突起
の一例）６２が形成されている。この第２の抜け止め掛
止突起６２は、前記第１の抜け止め掛止突起５７と同一
の大きさとなっている。なお、第１、第２の嵌入部５
４、５９の外径は、パイプ１１の内径より、０．１〜
０．５ｍｍ程度の範囲で小さくなっていると共に、その
嵌入方向先部には、面取りが成されている。なお、６３
は中空部を示す。On the other hand, the pile head mounting member 52 is integrally connected to a second fitting portion 59 that closely fits into the upper end portion of the pipe 11 and to an upper portion of the second fitting portion 59, and is larger than the inner diameter of the pipe 11. And a second stopper portion 60, on which a header portion 61 is formed. Around the second fitting portion 59, one or a plurality of second retaining retaining projections 62 are formed. The second retaining retaining projection 62 has the same size as the first retaining retaining projection 57. The first and second fitting portions 5
The outer diameter of 4, 59 is 0.1 to more than the inner diameter of pipe 11.
The diameter is reduced in a range of about 0.5 mm, and a chamfer is formed at a front end portion in the fitting direction. Note that 63
Indicates a hollow portion.

【００１５】従って、管杭５０の製造にあっては、中古
又は新品のパイプ１１を所定長さに切断し、このパイプ
１１の内径に合う杭先取付け具５１、杭頭取付け具５２
を用意し、これをパイプ１１の両端に叩き込むことによ
って完成する。一旦これらを装着した後は、第１、第２
の嵌入部５４、５９にそれぞれ形成されている第１、第
２の抜け止め掛止突起５７、６２の後端が食い込んだパ
イプ１１の内側に引っ掛かって容易に抜けないことにな
る。Therefore, in manufacturing the pipe pile 50, a used or new pipe 11 is cut into a predetermined length, and a pile tip mounting tool 51 and a pile head mounting tool 52 that match the inner diameter of the pipe 11 are prepared.
Is prepared, and this is driven into both ends of the pipe 11 to complete the process. Once these are installed, the first and second
The rear ends of the first and second retaining stopper projections 57 and 62 formed on the fitting portions 54 and 59 are caught inside the cut-in pipe 11 and are not easily removed.

【００１６】この実施の形態においては、説明を容易に
するため、具体的に数字を用いて説明したが、この数字
に限定されるものではなく、本発明の要旨を変更しない
程度の設計変更を行う場合も、本発明は適用される。更
に、この実施の形態においては、管端取付け具をパイプ
１１の端部に取付ける杭先取付け具１２、５１、杭頭取
付け具１３、５２に適用した場合について説明したが、
管端に固定して取付けるものではあれば、他の用途（例
えば、パイプ連結具、手摺り、欄干等）にも適用可能で
なる。In this embodiment, for the sake of simplicity, the description has been made using specific numbers. However, the present invention is not limited to these numbers, and design changes that do not change the gist of the present invention are made. The present invention is also applied to the case where it is performed. Furthermore, in this embodiment, the case where the pipe end fitting is applied to the pile tip fittings 12, 51 and the pile head fittings 13, 52 for attaching to the end of the pipe 11 has been described.
As long as it is fixedly attached to the pipe end, it can be applied to other uses (for example, pipe couplers, handrails, balustrades, etc.).

【００１７】[0017]

【発明の効果】請求項１、２記載の管端取付け具は、以
上の説明からも明らかなように、嵌入部の周囲に１又は
２以上の掛止突起が形成されているので、一旦装着すれ
ば、パイプの内側に噛み込み、パイプから容易に抜けな
いことになる。特に、請求項２記載の管端取付け具は、
掛止突起が嵌入方向に徐々にその高さが低くなった抜け
止め掛止突起によって形成されているので、パイプの内
側に強固に噛み込み、逆方向には掛かりとなって極めて
抜けにくいという利点がある。請求項３〜５記載の管端
取付け具は以上の説明からも明らかなように、パイプの
端部に嵌入する嵌入部の環状溝にかしめ部材を挿入し、
管端取付け具をパイプに装着する場合には、かしめ部材
の掛止突起がパイプの内側に噛み込むようにしているの
で、パイプの端部に容易に装着することができ、しか
も、装着した管端取付け具が容易に抜けないという利点
がある。特に、請求項４記載の管端取付け具において、
かしめ部材は、環状溝内を１８０度を超えて２２５度の
範囲で覆う円弧状部を有しているので、一旦環状溝に装
着したかしめ部材が自重等によって抜けないので、管端
取付け具のパイプへの装着作業が容易になる。そして、
掛止突起は、該円弧状部の端部及び中間部に設けられて
いるので、パイプの内部の複数箇所に係合して噛み込ま
せることができ、これによって、十分な強度を有して管
端取付け具を取付けることができる。また、請求項５記
載の管端取付け具においては、掛止突起は、装着方向に
その半径方向の幅が徐々に縮小したテーパー部を備えて
いるので、管端取付け具のパイプへの取付けが容易にな
ると共に、一旦装着した管端取付け具がパイプから外れ
にくいという利点がある。According to the first and second aspects of the present invention, as is apparent from the above description, one or two or more engaging projections are formed around the fitting portion, so that the fitting is once mounted. If it does so, it will bite into the inside of the pipe and will not easily fall out of the pipe. In particular, the pipe end fitting according to claim 2 is
Since the latching projections are formed by the retaining latching projections whose height gradually decreases in the fitting direction, they are firmly engaged with the inside of the pipe, and are hooked in the opposite direction, making it extremely difficult to slip out. There is. As is clear from the above description, the pipe end fitting according to claims 3 to 5 inserts the caulking member into the annular groove of the fitting portion fitted into the end of the pipe,
When attaching the pipe end fitting to the pipe, the hooking projection of the caulking member is made to bite into the inside of the pipe, so it can be easily attached to the end of the pipe, and furthermore, the attached pipe end mounting There is an advantage that the tool does not come off easily. In particular, in the pipe end fitting according to claim 4,
Since the caulking member has an arc-shaped portion that covers the inside of the annular groove in a range of more than 180 degrees and 225 degrees, the caulking member once mounted in the annular groove does not come off due to its own weight or the like. Installation work to the pipe becomes easy. And
Since the latching projections are provided at the end and the middle of the arc-shaped portion, they can be engaged with and engaged with a plurality of locations inside the pipe, thereby having sufficient strength. Pipe end fittings can be installed. Further, in the pipe end fitting according to the fifth aspect, the hooking projection has a tapered portion whose width in the radial direction is gradually reduced in the mounting direction, so that the pipe end fitting can be attached to the pipe. This has the advantage that it becomes easier and that the mounted pipe end fitting is less likely to come off the pipe.

【００１８】そして、請求項６記載の管杭においては、
第１の管端取付け具は、パイプの端部に密接嵌入し、周
囲には１又は２以上の第１の抜け止め掛止突起が設けら
れている第１の嵌入部を有し、第２の管端取付け具は、
パイプの端部に密接嵌入し、周囲には１又は２以上の第
２の抜け止め掛止突起が形成されている第２の嵌入部を
有しているので、一旦装着した第１、第２の管端取付け
具は容易に抜けず、従って、複数回の使用ができる。請
求項７、８記載の管杭にあっては、所定長さのパイプの
上下に取付ける第１、第２の管端取付け具に装着時に半
径方向外側に弾性的に突出して、パイプの内側に噛み込
む掛止突起を有するので、第１、第２の管端取付け具の
装着が極めて容易となる。これによって、新品のパイプ
のみならず中古のパイプを使用して、現場で容易かつ安
価に管杭を製造することができる。特に、請求項８記載
の管端取付け具においては、第１、第２の環状溝に装着
される第１、第２のかしめ部材は、それぞれの環状溝内
を１８０度を超えて２２５度の範囲で覆う円弧状部を有
し、掛止突起は、該円弧状部の端部及び中間部に設けら
れ、しかも、掛止突起は、装着方向にその半径方向幅が
徐々に縮小したテーパー部を備えているので、第１、第
２のかしめ部材の取付けが容易になると共に、一旦パイ
プに装着した第１、第２の管端取付け具が極めて抜けに
くく、この管杭を繰り返し使用できる。In the pipe pile according to the sixth aspect,
The first pipe end fitting has a first fitting portion closely fitted to an end portion of the pipe and having one or more first retaining protrusions provided around the first fitting portion. The pipe end fittings are
Since it has a second fitting portion which is closely fitted to the end of the pipe and has one or more second retaining retaining projections formed around the first fitting portion, the first and second fitting portions are once fitted. The tube end fitting does not come off easily and can therefore be used multiple times. In the pipe pile according to claims 7 and 8, when the pipe pile is attached to first and second pipe end fittings which are attached to the upper and lower sides of a pipe of a predetermined length, the pipe pile elastically protrudes outward in the radial direction and is inserted inside the pipe. The provision of the engagement projections makes it extremely easy to mount the first and second tube end fittings. Thus, pipe piles can be easily and inexpensively manufactured on site using not only new pipes but also used pipes. In particular, in the pipe end fitting according to the eighth aspect, the first and second caulking members mounted on the first and second annular grooves each extend in the respective annular grooves by more than 180 degrees and 225 degrees. An arc-shaped portion covering the area is provided, and the latching projection is provided at an end portion and an intermediate portion of the arc-shaped portion, and the latching projection has a tapered portion whose radial width gradually decreases in the mounting direction. , The attachment of the first and second caulking members is facilitated, and the first and second pipe end fittings once attached to the pipe are extremely hard to come off, so that this pipe pile can be used repeatedly.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施の形態に係る管端取付け具を適
用した管杭の断面図である。FIG. 1 is a sectional view of a pipe pile to which a pipe end fitting according to one embodiment of the present invention is applied.

【図２】同管杭の杭先取付け具の説明図である。FIG. 2 is an explanatory view of a pile tip attachment of the pipe pile.

【図３】これに使用するかしめ部材の平面図である。FIG. 3 is a plan view of a caulking member used for this.

【図４】同かしめ部材を装着した管杭の断面図である。FIG. 4 is a sectional view of a pipe pile on which the caulking member is mounted.

【図５】前記管杭の頭部に取付けられた杭頭取付け具の
説明図である。FIG. 5 is an explanatory view of a pile head fixture attached to the head of the pipe pile.

【図６】本発明の他の実施の形態に係る管端取付け具を
適用した管杭の断面図である。FIG. 6 is a sectional view of a pipe pile to which a pipe end fitting according to another embodiment of the present invention is applied.

【図７】従来例に係る管杭の側面図である。FIG. 7 is a side view of a pipe pile according to a conventional example.

【符号の説明】[Explanation of symbols]

１０：管杭、１１：パイプ、１２：杭先取付け具（第１
の管端取付け具）、１３：杭頭取付け具（第２の管端取
付け具）、１４：かしめ部材、１５：第１の嵌入部、１
６：第１のストッパー部、１７：尖り部、１８：第１の
環状溝、１９：中空部、２０：円弧状部、２１：掛止突
起、２２：掛止突起、２３：掛止突起、２４：テーパー
部、２５：パーパー部、２６：第２の嵌入部、２７：第
２のストッパー部、２８：ヘッダー部、２９：第２の環
状溝、３０：中空部、５０：管杭、５１：杭先取付け
具、５２：杭頭取付け具、５４：第１の嵌入部、５５：
第１のストッパー部、５６：尖り部、５７：第１の抜け
止め掛止突起、５８：中空部、５９：第２の嵌入部、６
０：第２のストッパー部、６１：ヘッダー部、６２：第
２の抜け止め掛止突起、６３：中空部10: pipe pile, 11: pipe, 12: pile tip attachment (first
13: pile head mounting (second pipe end mounting), 14: caulking member, 15: first fitting portion, 1
6: first stopper portion, 17: pointed portion, 18: first annular groove, 19: hollow portion, 20: arc-shaped portion, 21: hooking projection, 22: hooking projection, 23: hooking projection, 24: taper portion, 25: parper portion, 26: second fitting portion, 27: second stopper portion, 28: header portion, 29: second annular groove, 30: hollow portion, 50: pipe pile, 51 : Pile mounting fixture, 52: Pile head mounting tool, 54: First fitting portion, 55:
1st stopper part, 56: sharp part, 57: 1st retaining stopper projection, 58: hollow part, 59: 2nd fitting part, 6
0: second stopper portion, 61: header portion, 62: second retaining hooking projection, 63: hollow portion

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 パイプの端部に固定する管端取付け具で
あって、前記パイプの端部に密接嵌入し、周囲には１又
は２以上の掛止突起が形成されている嵌入部と、該嵌入
部に一体的に連接し、前記パイプの内径より大きいスト
ッパー部とを有し、前記パイプに前記嵌入部を装着した
状態では、前記掛止突起が前記パイプの内側に噛み込む
ことを特徴とする管端取付け具。1. A pipe end fitting fixed to an end of a pipe, the fitting portion being closely fitted to an end of the pipe, and having one or more engaging projections formed around the fitting. A stopper portion that is integrally connected to the fitting portion and is larger than the inner diameter of the pipe; and wherein the fitting protrusion is fitted into the pipe when the fitting portion is attached to the pipe. Pipe end fittings. 【請求項２】 請求項１記載の管端取付け具において、
前記掛止突起が嵌入方向に徐々にその高さが低くなった
抜け止め掛止突起によって形成されていることを特徴と
する管端取付け具。2. The pipe end fitting according to claim 1, wherein
A pipe end fitting, wherein the hooking projection is formed by a retaining hooking projection whose height gradually decreases in a fitting direction. 【請求項３】 パイプの端部に固定する管端取付け具で
あって、前記パイプの端部に密接嵌入し、周囲には環状
溝が形成されている嵌入部と、該嵌入部に一体的に連接
し、前記パイプの内径より大きいストッパー部と、前記
環状溝に装着され、前記パイプに前記嵌入部を装着した
状態では、前記環状溝から突出し、前記パイプの内端部
に噛み込む掛止突起を備えたかしめ部材とを有すること
を特徴とする管端取付け具。3. A pipe end fitting fixed to an end of a pipe, the fitting being closely fitted to an end of the pipe and having an annular groove formed around the fitting, and an integral part of the fitting. A stopper that is connected to the pipe and is larger than the inner diameter of the pipe; and a stopper that is attached to the annular groove and that protrudes from the annular groove and engages with the inner end of the pipe when the fitting portion is attached to the pipe. A pipe end fitting, comprising: a caulking member having a projection. 【請求項４】 請求項３記載の管端取付け具において、
前記かしめ部材は、前記環状溝内を１８０度を超えて２
２５度の範囲で覆う円弧状部を有し、前記掛止突起は、
該円弧状部の端部及び中間部に設けられていることを特
徴とする管端取付け具。4. The pipe end fitting according to claim 3, wherein
The caulking member extends over 180 degrees within the annular groove for 2
It has an arc-shaped portion covering in a range of 25 degrees,
A pipe end fitting provided at an end portion and an intermediate portion of the arc-shaped portion. 【請求項５】 請求項３又は４記載の管端取付け具にお
いて、前記掛止突起は、装着方向にその半径方向の幅が
徐々に縮小したテーパー部を備えていることを特徴とす
る管端取付け具。5. A tube end fitting according to claim 3, wherein said hooking projection has a tapered portion whose width in a radial direction is gradually reduced in a mounting direction. Fixture. 【請求項６】 所定長さのパイプと、該パイプの下端に
装着された第１の管端取付け具と、該パイプの上端に装
着された第２の管端取付け具を有する管杭であって、前
記第１の管端取付け具は、前記パイプの端部に密接嵌入
し、周囲には１又は２以上の第１の抜け止め掛止突起が
設けられている第１の嵌入部と、該第１の嵌入部に一体
的に連接し、前記パイプの内径より大きい第１のストッ
パー部とを有し、前記第２の管端取付け具は、前記パイ
プの端部に密接嵌入し、周囲には１又は２以上の第２の
抜け止め掛止突起が形成されている第２の嵌入部と、該
第２の嵌入部に一体的に連接し、前記パイプの内径より
大きい第２のストッパー部とを有していることを特徴と
する管杭。6. A pipe pile having a pipe of a predetermined length, a first pipe end fitting attached to a lower end of the pipe, and a second pipe end fitting attached to an upper end of the pipe. A first fitting portion, wherein the first pipe end fitting is closely fitted to an end portion of the pipe, and is provided with one or two or more first retaining hooking projections around the first fitting portion; A first stopper that is integrally connected to the first fitting portion and is larger than the inner diameter of the pipe, wherein the second pipe end fitting is fitted closely to an end of the pipe, and A second fitting portion formed with one or more second retaining retaining projections, and a second stopper integrally connected to the second fitting portion and having a larger inner diameter than the pipe. Pipe pile characterized by having a part. 【請求項７】 所定長さのパイプと、該パイプの下端に
装着された第１の管端取て、前記第１の管端取付け具
は、前記パイプの端部に密接嵌入し、周囲には第１の環
状溝が形成されている第１の嵌入部と、該第１の嵌入部
に一体的に連接し、前記パイプの内径より大きい第１の
ストッパー部と、該第１のストッパー部に連結され先方
に縮径する尖り部と、前記第１の環状溝に装着され、前
記パイプに前記第１の嵌入部を装着した状態では、前記
第１の環状溝から突出し、前記パイプの内端部に噛み込
む掛止突起を備えた第１のかしめ部材とを有し、前記第
２の管端取付け具は、前記パイプの端部に密接嵌入し、
周囲には第２の環状溝が形成されている第２の嵌入部
と、該第２の嵌入部に一体的に連接し、前記パイプの内
径より大きい第２のストッパー部と、該第２のストッパ
ー部に連結されるヘッダー部と、前記第２の環状溝に装
着され、前記パイプに前記第２の嵌入部を装着した状態
では、前記第２の環状溝から突出し、前記パイプの内端
部に噛み込む掛止突起を備えた第２のかしめ部材とを有
していることを特徴とする管杭。7. A pipe having a predetermined length and a first pipe end attached to a lower end of the pipe, wherein the first pipe end fitting is closely fitted to an end of the pipe, and is fitted around the pipe. Is a first fitting portion formed with a first annular groove, a first stopper portion integrally connected to the first fitting portion and larger than the inner diameter of the pipe; and a first stopper portion. A pointed portion that is connected to the front end and contracts in a forward direction, and is attached to the first annular groove, and in a state where the first fitting portion is attached to the pipe, protrudes from the first annular groove, and is formed inside the pipe. A first caulking member having a latching projection that bites into an end of the pipe, wherein the second pipe end fitting is closely fitted to an end of the pipe;
A second fitting portion having a second annular groove formed therearound; a second stopper portion which is integrally connected to the second fitting portion and is larger than the inner diameter of the pipe; A header portion connected to a stopper portion, mounted in the second annular groove, and in a state in which the second fitting portion is mounted on the pipe, protrudes from the second annular groove, and an inner end portion of the pipe And a second caulking member having a latching projection that bites into the pipe pile. 【請求項８】 請求項７記載の管杭において、前記第
１、第２の環状溝に装着される第１、第２のかしめ部材
は、前記それぞれの環状溝内を１８０度を超えて２２５
度の範囲で覆う円弧状部を有し、前記掛止突起は、該円
弧状部の端部及び中間部に設けられ、しかも、前記掛止
突起は、装着方向にその半径方向幅が徐々に縮小したテ
ーパー部を備えていることを特徴とする管杭。8. The pipe pile according to claim 7, wherein the first and second caulking members mounted in the first and second annular grooves extend over 225 in the respective annular grooves more than 180 degrees.
An arc-shaped portion that covers a range of degrees, the hooking projection is provided at an end and an intermediate portion of the arc-shaped portion, and the hooking projection has a gradually increasing radial width in a mounting direction. A pipe pile comprising a reduced tapered portion.